SegaKicksOffTheNewYearWithSonic&All-StarsRacingTransformedOniOS

Sonic and the Sega All-Stars are back on iOS with a new game that seeks to transform racing.
The game in question is none other than the iOS port of Sonic & All-Stars Racing Transformed, which was officially announced by Sega back in October. The sequel to Sonic & Sega All-Stars Racing, the new game is so named because it features the titular legendary racers in a racing competition involving vehicles that transform in mid-race across land, water, and air:

Sonic and the All-Stars cast line up on the starting grid once again to battle for supremacy in the ultimate race. Compete across land, water and air in incredible transforming vehicles that change from cars to boats to planes mid-race. Master your driving skills as you drift, barrel roll and boost to overtake your rivals, or use your weapons tactically and unleash your All-Star move to gain the winning advantage.